<script type="text/javascript">
    var dsCountry;
    var zones = <?php echo Zend_Json_Encoder::encode($this->zones);?>;
    var tax_classes = <?php echo Zend_Json_Encoder::encode($this->taxClasses);?>;
    var customer_groups = <?php echo Zend_Json_Encoder::encode($this->customerGroups);?>;
</script>
<?php $this->headScript()->appendFile('/js/ecart/admin/tax/tax-rate.js'); ?>